As some of you may know, I've been grappling with using RE's (which I really prefer to use) in code rather than conditionals which are much easier to read (but ten times slower).

I have come up with a neat idea that I thought would simplify my code, and also still allow me to use regular expressions. Rather than having one 60 character RE handle things, I can break stuff down into smaller RE's and put them in an array and then iterate over them. So while I am not using the full extent of the RE engine, I am also not making perl do backflips for conditionals -- and all my co-workers will be able to read it (because theyre small and simple).

So an example of this is the following sub: 

sub isend {
  my $line = shift;
  my @terminators =
  [ qr!#=3D=3D=3D(?:END|end)!,
    qr!#===(?:END|end)!,
    qr![-]+_=_NextPart_!,
    qr!1===(?:END|end)!,
    qr!#---(?:END|end)!,
  ];

  foreach my $ending (@terminators) {
    return undef if $line =~ $ending;
  }
  return 1;
}

[download]
Note how cool those qr!!'s line up and are easily readable by almost anyone (yeah I'm proud of myself. *grin*). However, the test is evaluating true every single time, even when there is no reason it should be. When I print them out, I get an array ref, which does seem odd since that would seem to me to resemble this: 
@terminators = [ [foo, bar], [baz, bletch] ];
# an array of array refs, right?

[download]
rather than what it really is, above. So I'm sure I am missing something stupid here, and I'd really like to use this construct since it seems like such a magical silver bullet for my readbility vs. speed dilemma.

thanks
brother dep.

--
Laziness, Impatience, Hubris, and Generosity.

In reply to Using arrays of qr!! to simplify larger RE's for readability (code). by deprecated

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